diff options
Diffstat (limited to 'Firestore/Source/API/FIRQuerySnapshot.mm')
-rw-r--r-- | Firestore/Source/API/FIRQuerySnapshot.mm | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/Firestore/Source/API/FIRQuerySnapshot.mm b/Firestore/Source/API/FIRQuerySnapshot.mm new file mode 100644 index 0000000..abee84c --- /dev/null +++ b/Firestore/Source/API/FIRQuerySnapshot.mm @@ -0,0 +1,151 @@ +/* + * Copyright 2017 Google + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#import "Firestore/Source/API/FIRQuerySnapshot+Internal.h" + +#import "FIRFirestore.h" +#import "FIRSnapshotMetadata.h" +#import "Firestore/Source/API/FIRDocumentChange+Internal.h" +#import "Firestore/Source/API/FIRDocumentSnapshot+Internal.h" +#import "Firestore/Source/API/FIRQuery+Internal.h" +#import "Firestore/Source/Core/FSTQuery.h" +#import "Firestore/Source/Core/FSTViewSnapshot.h" +#import "Firestore/Source/Model/FSTDocument.h" +#import "Firestore/Source/Model/FSTDocumentSet.h" +#import "Firestore/Source/Util/FSTAssert.h" + +NS_ASSUME_NONNULL_BEGIN + +@interface FIRQuerySnapshot () + +- (instancetype)initWithFirestore:(FIRFirestore *)firestore + originalQuery:(FSTQuery *)query + snapshot:(FSTViewSnapshot *)snapshot + metadata:(FIRSnapshotMetadata *)metadata; + +@property(nonatomic, strong, readonly) FIRFirestore *firestore; +@property(nonatomic, strong, readonly) FSTQuery *originalQuery; +@property(nonatomic, strong, readonly) FSTViewSnapshot *snapshot; + +@end + +@implementation FIRQuerySnapshot (Internal) + ++ (instancetype)snapshotWithFirestore:(FIRFirestore *)firestore + originalQuery:(FSTQuery *)query + snapshot:(FSTViewSnapshot *)snapshot + metadata:(FIRSnapshotMetadata *)metadata { + return [[FIRQuerySnapshot alloc] initWithFirestore:firestore + originalQuery:query + snapshot:snapshot + metadata:metadata]; +} + +@end + +@implementation FIRQuerySnapshot { + // Cached value of the documents property. + NSArray<FIRQueryDocumentSnapshot *> *_documents; + + // Cached value of the documentChanges property. + NSArray<FIRDocumentChange *> *_documentChanges; +} + +- (instancetype)initWithFirestore:(FIRFirestore *)firestore + originalQuery:(FSTQuery *)query + snapshot:(FSTViewSnapshot *)snapshot + metadata:(FIRSnapshotMetadata *)metadata { + if (self = [super init]) { + _firestore = firestore; + _originalQuery = query; + _snapshot = snapshot; + _metadata = metadata; + } + return self; +} + +// NSObject Methods +- (BOOL)isEqual:(nullable id)other { + if (other == self) return YES; + if (![[other class] isEqual:[self class]]) return NO; + + return [self isEqualToSnapshot:other]; +} + +- (BOOL)isEqualToSnapshot:(nullable FIRQuerySnapshot *)snapshot { + if (self == snapshot) return YES; + if (snapshot == nil) return NO; + + return [self.firestore isEqual:snapshot.firestore] && + [self.originalQuery isEqual:snapshot.originalQuery] && + [self.snapshot isEqual:snapshot.snapshot] && [self.metadata isEqual:snapshot.metadata]; +} + +- (NSUInteger)hash { + NSUInteger hash = [self.firestore hash]; + hash = hash * 31u + [self.originalQuery hash]; + hash = hash * 31u + [self.snapshot hash]; + hash = hash * 31u + [self.metadata hash]; + return hash; +} + +@dynamic empty; + +- (FIRQuery *)query { + return [FIRQuery referenceWithQuery:self.originalQuery firestore:self.firestore]; +} + +- (BOOL)isEmpty { + return self.snapshot.documents.isEmpty; +} + +// This property is exposed as an NSInteger instead of an NSUInteger since (as of Xcode 8.1) +// Swift bridges NSUInteger as UInt, and we want to avoid forcing Swift users to cast their ints +// where we can. See cr/146959032 for additional context. +- (NSInteger)count { + return self.snapshot.documents.count; +} + +- (NSArray<FIRQueryDocumentSnapshot *> *)documents { + if (!_documents) { + FSTDocumentSet *documentSet = self.snapshot.documents; + FIRFirestore *firestore = self.firestore; + BOOL fromCache = self.metadata.fromCache; + + NSMutableArray<FIRQueryDocumentSnapshot *> *result = [NSMutableArray array]; + for (FSTDocument *document in documentSet.documentEnumerator) { + [result addObject:[FIRQueryDocumentSnapshot snapshotWithFirestore:firestore + documentKey:document.key + document:document + fromCache:fromCache]]; + } + + _documents = result; + } + return _documents; +} + +- (NSArray<FIRDocumentChange *> *)documentChanges { + if (!_documentChanges) { + _documentChanges = + [FIRDocumentChange documentChangesForSnapshot:self.snapshot firestore:self.firestore]; + } + return _documentChanges; +} + +@end + +NS_ASSUME_NONNULL_END |